In the show, which is one of the last Hawking ever worked on, he flies around in a spaceship called the “S.S. Hawking” and explores deep scientific mysteries.

The show was created by CuriosityStream, and its description reads: “Mixing recollections from his childhood and family life that inspired his work as a scientist, he goes in search of the ultimate mystery: the theory of everything. Along the way, time travel and a precarious free fall to Venus, plus questions about aliens, God, and truth, offer unprecedented insight into this genius mind.”

CuriosityStream planned to release the third and final episode, which in part dives into Hawking's fears about artificial intelligence, in mid-April.

But a representative for the company told Business Insider that, following the death of Hawking, its creators decided to release the last episode today.

Through March 23, Anyone can also watch the series for free for a limited time. It's normally packaged in a streaming subscription that costs between $2.99 and $11.99 per month.